自定义view之绘画太极图

                  mainactivity中不需要打代码

public class MainActivity extends AppCompatActivity {

   

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
      

    }
}

       

       绘画太极 DrawView  继承view

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" tools:context="com.bwie.a04_lian.MainActivity">

    <view.DrawView
       
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

RelativeLayout>